Power snowplow



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v snow plow adjustable in HUGH MXSCAMIPJBIELL, OF DULUTH, MINNESOT.

POWER SNOWIPLOW.

.Application filed December 26, 1919. Serial No. 343,326.

T 0 @ZZ 'whom t may ,concer/n:

Be it known that l, HUGH Misoaiurennt, a citizen of the United States, residing at Duluth, in the county ot' St. Louis and State of Minnesota, have invented certain new and useful llmprovements in Power Snowplows, ot which the following is a specification.

This invention relates to snow plows, and more particularly to such` as applied to a seltp r'opelled vehicle ot' suiiicient power to operate the plow through heavy snows.

Among the objects of this invention are to provide a snow plow capable of successfully and readily handling heavy' snows; further to make the snow plow removable from the body of the self-propelled vehicle or tractor to permit the tractor to be opwhen desired; to so arrange the plow with relation to the tractor or self-propelled vehicle that it will be self-supporting; to produce a width so that wider or narrower pathsmay be cleared as desired; to so positionv and connect the plow with relation tothe tractor that it may be handled with greatest ease and maximum efliciency; to provide a more efficacious plow of the class described, and also one that is simple and economical in construction and operation; and such further objects, advantages andcapabilities as will later more fully appear.

My invention further resides in the combination, construction and arrangement ot parts illustrated in the accompanying drawings, and while ll have shown therein a preferred embodiment, l desire it to be under stood thatthe same is susceptible of modiication and change without departing from the spirit of my invention.

ln the drawings: y

Fig. l is a side elevation ot one form of tractor with my plow attached thereto, the plow being shown partly in section for the sake of clearness. v' Fig. 2 is a plan view of Fig. l, except to show the plow in its entirety.

ln those parts ot the country having heavy snowtalls, the matter ot quickly and etti ciently handling such snows 4is quite a serious matter. The depth ot the snow is many times so great that the use ot' horses would be impraticable, and the attachment 'of a plow .behind a tractor would not bev feasible, since the tractor would itself become stalled in the snow. lTo overcome these difiiculties l have devised the snow plow forming the subject of this application.

Referring to the drawings: l

My plow is shown as'att-ached to a tractor of the caterpillar type. The particular form of tractor chosen for this illustration being what is commonl known as whi a et .Y l P tank. ltis, of course, to be understood that l do not wish to be limited to this particular vform ot' seltpropelled vehicle or tractor, since my plow is capable of appli-Y cation to other forms of tractor without departing from my inventive idea.

n the drawings the plow proper is designated at P, and the tractor as rl, the former being pivotally secured to the latter to per mit oscillating movement of the plow in a vertical direction to accommodate any unevenness of the supporting surface. rllhe plow comprises the main cheek plates l and 2, which extend forward at a suitable angle as indicated at 3, turn the snow outwardly. A suitable nose piece is attached to the apex ot the plow for strengthening purposes, and for diverting any hard substances that may be encoun* to more effectively tered` The cheek plates l and 2 are rigidly 35 secured in proper angularity to each other by an open trame work near their rear end` which frame work comprises the angle bars 5 and 6, and the vertically extending member 7. The angle bar 6 'as shown in Fig. 9

1 rests upon the bloclr 8, which in turn is carried by `block 9, the upper surface of which is formedl in the arc oit' a circle to permit sliding movement vwith the lower face of blocli 8, which is similarly curved,

and which blocks maybe held against accidental separation in any convenient manner. Blocks in turn rest upon the runners l0, and bear thereon at a point intermediate of their'length. rlhis construction renders the 10@ plow self-supportingubutl wish it to be understood that, if desired, other forms of supporting means may be used, such forexample, as wheels. ln order to prevent. the

runners from becoming separated from the plow. the front end thereof is secured to the inner tace oi plates l and 2, by means of chains il kand 12. l

Extending rearwardly` and .suitably se cured to the plow, are which at their rear ends are provided with suitable openings to tit over the aales'l,

the bars-13 and lll. ille nuts a pivotal movelnent of the plow on the axle 15 to permit the sled runners to pass over any uneven pla-ces in the snow lor ground, without straining or distorting the plow with relation to the tractor. Hinged to the rear end portion of` each of plates l and 2 are the extension plates 16 and 17,

sides of the tank by means of bars which are in turn provided with a of openings 18, through any one may be passed a pin bracket 19, mounted on the inside of the tank. plurality of openings y the distance' of the plates' 16 from the a and b, plurality sired. The outer end of bars a and aie hinged at 20 and 21 to the reai end of eX- increasing or decreasing of the widthin an obvious manner. The lsides of the tank have formed therein thel openings 22,' of sufficient size to permit bars a and b to pass freely therethrough.

It is of importance to is supported on two or ings, is self-supporting,

note that 'the plow three point bearis oscillatable with are in turn supported away from the relation to the tractor to accommodate for any'unevenness in the road, and is pushed by power instead of being drawn.

It will thus be seen that Ighave provided a construction that is powerful in operation, simple to manipulate, and will readily and successfully handle snows of great depth.

aving now described my invention.

-I claim:

In a structure of the character described. a self propelling vehicle having,r securing means at the sides thereof, a self supporting snow plow secured to one end of the vehicle against lateral turning but capable of vertical oscillation according to the surface traversed, laterally adjustable plates secured to the sides of the plow and capable of having their inclination varied to vary the width of path cleared and braces pivotally connected to the plates and adjustably connected to said securing means.

In witness whereof. I hereunto subscribe my name to this specilication in the presence1 of two witnesses.

HUGH MISCAMPBELL. 

